Graphics Tablet User's Manual
3.  Product Description 
3.1.  Overview 
DEMUX
256K 
A
c
q
 Mem
PCI Interface 
10- bit 
SH + ADC
TIMEBA
S
E
TRIGGER
circuit 
Card
Controller
Thr 
DAC 
Input 
Signal 
A
mplifier 
Trigger 
Signal 
A
mplifier 
10-bit
PCI Bus 
Signal 
Input 
trigger 
Input 
50 
Ohms 
50 
Ohms 
Cal 
DAC 
Simplified Block Diagram 
once for each channel 
The 10-bit DC series products are CompactPCI/PXI compliant and require an appropriate CompactPCI crate. The 
digitizers are all fully programmable over the PCI bus and deliver oscilloscope-like performance. Data captured by 
the digitizers can be transferred to a host processor, either in the PC, in the crate, or interfaced to the crate, over the 
PCI bus. The 6U units (DC222, DC252, and DC282) can operate at 64-bit − 66 MHz with peak transfer speeds 
approaching 500 MB/s. The 3U units (DC122 and DC152) work at 32-bit − 33 MHz. The digitizers occupy a single 
slot of a 3U or 6U CompactPCI crate and they comply with the 3U or 6U CompactPCI standard (PXI compliant). 
Acqiris digitizers are designed to provide superior measurement precision and accuracy. Key acquisition 
specifications (such as DC accuracy, integral and differential non-linearity) have been optimized to deliver maximum 
measurement fidelity. Careful circuit layout, custom IC’s and special packaging techniques have all been employed 
to reduce overall system noise. The use of custom IC’s also dramatically reduces the total number of discrete 
components required. This has tremendous benefits on reliability and also allows the modules to use a minimal 
amount of power. 
For complete technical specifications concerning your particular digitizer please refer to the product’s Specifications 
& Characteristics. In addition, we maintain up-to-date versions of all product data sheets on our web site 
(www.acqiris.com). The data sheets are available in pdf format and are best viewed using Adobe Acrobat software. If 
you have trouble accessing our web site, or viewing the data sheets, please contact your nearest sales office. 
User Manual: Family of 10-bit Digitizers    Page 27 of 55 










